Removed outdated libknot tests.

src/Makefile.am

src/tests/libknot/files/parsed_data

src/tests/libknot/files/parsed_data_queries

src/tests/libknot/files/raw_data

src/tests/libknot/files/raw_data_queries

src/tests/libknot/libknot/cuckoo_tests.c

src/tests/libknot/libknot/cuckoo_tests.h

src/tests/libknot/libknot/dname_table_tests.c

src/tests/libknot/libknot/dname_table_tests.h

src/tests/libknot/libknot/dname_tests.c

src/tests/libknot/libknot/dname_tests.h

src/tests/libknot/libknot/edns_tests.c

src/tests/libknot/libknot/edns_tests.h

src/tests/libknot/libknot/node_tests.c

src/tests/libknot/libknot/node_tests.h

src/tests/libknot/libknot/nsec3_tests.c

src/tests/libknot/libknot/nsec3_tests.h

src/tests/libknot/libknot/packet_tests.c

src/tests/libknot/libknot/packet_tests.h

src/tests/libknot/libknot/query_tests.c